The radiation amount of a mobile phone for two half-hour periods per day is equal to ______ to an X-ray for ten seconds.
Mike ____ with Janet for over one year before they got married.
Though the girl ____ to learn Japanese, she couldn’t catch up with her classmates.
It’s important for us to employ a word or a phrase according to the _____ in language studies.
I told Sally how to get here, but perhaps I ___ for her.
____ telephone is working here. You have to get them____.